STRUCT DPU_DRM_SCALER_V2(9)

💅 struct dpu_drm_scaler_v2

okay bestie, welcome to the manual page for struct dpu_drm_scaler_v2 — that's the kernel API manual, and this cutie is literally version 2 of struct dpu_drm_scaler. glow-up complete, no cap ✨

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🦋 NAME

struct dpu_drm_scaler_v2 — version 2 of struct dpu_drm_scaler, fr fr. this is the sequel and it ate 💅

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✨ SYNOPSIS

struct dpu_drm_scaler_v2 {
    uint32_t enable;
    uint32_t dir_en;
    struct dpu_drm_pix_ext_v1 pe;
    uint32_t horz_decimate;
    uint32_t vert_decimate;
    int32_t init_phase_x[DPU_MAX_PLANES];
    int32_t phase_step_x[DPU_MAX_PLANES];
    int32_t init_phase_y[DPU_MAX_PLANES];
    int32_t phase_step_y[DPU_MAX_PLANES];
    uint32_t preload_x[DPU_MAX_PLANES];
    uint32_t preload_y[DPU_MAX_PLANES];
    uint32_t src_width[DPU_MAX_PLANES];
    uint32_t src_height[DPU_MAX_PLANES];
    uint32_t dst_width;
    uint32_t dst_height;
    uint32_t y_rgb_filter_cfg;
    uint32_t uv_filter_cfg;
    uint32_t alpha_filter_cfg;
    uint32_t blend_cfg;
    uint32_t lut_flag;
    uint32_t dir_lut_idx;
    uint32_t y_rgb_cir_lut_idx;
    uint32_t uv_cir_lut_idx;
    uint32_t y_rgb_sep_lut_idx;
    uint32_t uv_sep_lut_idx;
    struct dpu_drm_de_v1 de;
};

like, look at all those fields. she's got range 🎀

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🌸 Members

so here's the whole roster, member by member — every single one, because we do not skip anybody in this group chat 🫶

• enable — Scaler enable. the on/off switch, the vibe check for the whole scaler 👑
• dir_en — Detail enhancer enable. turns the detail enhancer on ✨
• pe — Pixel extension settings. she's a struct dpu_drm_pix_ext_v1 and she's doing her thing 💖
• horz_decimate — Horizontal decimation factor. horizontal-ness, reduced 🦋
• vert_decimate — Vertical decimation factor. same energy but vertical, iykyk
• init_phase_x — Initial scaler phase values for x. phase one: x 🌈
• phase_step_x — Phase step values for x. how x moves, literally
• init_phase_y — Initial scaler phase values for y. and now y, periodt
• phase_step_y — Phase step values for y. y's step era 💫
• preload_x — Horizontal preload value. preloaded, horizontal, iconic
• preload_y — Vertical preload value. preloaded, vertical, also iconic
• src_width — Source width. where it's coming from, width-wise 📏
• src_height — Source height. where it's coming from, height-wise
• dst_width — Destination width. where it's going, width-wise
• dst_height — Destination height. where it's going, height-wise
• y_rgb_filter_cfg — Y/RGB plane filter configuration. y/rgb getting its own filter config, as she deserves 🎀
• uv_filter_cfg — UV plane filter configuration. uv's turn 💜
• alpha_filter_cfg — Alpha filter configuration. alpha filter, configured
• blend_cfg — Selection of blend coefficients. picking which blend coefficients, very main character
• lut_flag — LUT configuration flags. flags! for the LUT config! 🚩
• dir_lut_idx — 2d 4x4 LUT index. yeah, 2d, 4x4, that one
• y_rgb_cir_lut_idx — Y/RGB circular LUT index. circular, y/rgb, indexed 💅
• uv_cir_lut_idx — UV circular LUT index. circular, uv, indexed
• y_rgb_sep_lut_idx — Y/RGB separable LUT index. separable this time 🦋
• uv_sep_lut_idx — UV separable LUT index. separable, uv, final boss of the LUT indices
• de — Detail enhancer settings. she's a struct dpu_drm_de_v1 and she's the last field, going out on a high note 🔥

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👀 SEE ALSO

Kernel file ./drivers/gpu/drm/msm/disp/dpu1/dpu_hw_util.h — go read the actual source bestie:

• struct dpu_hw_blk(9)
• struct dpu_hw_scaler3_de_cfg(9)
• struct dpu_hw_scaler3_cfg(9)
• struct dpu_drm_pix_ext_v1(9)
• struct dpu_drm_de_v1(9)
• struct dpu_hw_qos_cfg(9)

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💀 friendly reminder from your girl: everything above the sign-off is exactly the struct as it lives in ./drivers/gpu/drm/msm/disp/dpu1. don't go renaming fields on me, the compiler will simply pass away.

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and that's the page!! source lives at ./drivers/gpu/drm/msm/disp/dpu1, dated October 2026, and yes this whole thing is struct dpu_drm_scaler_v2(9) — mwah, bye bestie 💖🦋🎀